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Notes from building RepDB and shipping fitness apps.

Pinned Jun 11, 2026

ExerciseDB Alternative? Four Exercise-Image Datasets Compared (2026)

ExerciseDB alternative? An honest comparison of ExerciseDB.io, WorkoutX, free-exercise-db, and RepDB — image quality first, then catalogue depth, schema, and pricing.

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Jun 29, 2026

Can You Use a Free Exercise Dataset Commercially? A 2026 Licensing Guide

Most teams grab a free exercise dataset, ship it, and never read the license. Here's an honest, accurate breakdown of which exercise datasets are actually safe for commercial use in 2026 — public-domain options, restricted APIs, image-provenance traps — and when a licensed dataset is worth paying for.

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